Directive (EU) 2016/801 of the European Parliament and of the CouncilDangos y teitl llawn

Article 28 U.K. Short-term mobility of researchers

1. Researchers who hold a valid authorisation issued by the first Member State shall be entitled to stay in order to carry out part of their research in any research organisation in one or several second Member States for a period of up to 180 days in any 360-day period per Member State, subject to the conditions laid down in this Article.

2. The second Member State may require the researcher, the research organisation in the first Member State or the research organisation in the second Member State to notify the competent authorities of the first Member State and of the second Member State of the intention of the researcher to carry out part of the research in the research organisation in the second Member State.

In such cases, the second Member State shall allow the notification to take place either:

(a) at the time of the application in the first Member State, where the mobility to the second Member State is already envisaged at that stage; or

(b) after the researcher was admitted to the first Member State, as soon as the intended mobility to the second Member State is known.

3. Where the notification has taken place in accordance with point (a) of paragraph 2, and where the second Member State has not raised any objection with the first Member State in accordance with paragraph 7, the mobility of the researcher to the second Member State may take place at any moment within the period of validity of the authorisation.

4. Where the notification has taken place in accordance with point (b) of paragraph 2, the mobility may be initiated after the notification to the second Member State immediately or at any moment thereafter within the period of validity of the authorisation.

5. The notification shall include the valid travel document, as provided for in point (a) of Article 7(1), and the valid authorisation issued by the first Member State covering the period of the mobility.

6. The second Member State may require the notification to include the transmission of the following documents and information:

(a) the hosting agreement in the first Member State as referred to in Article 10 or, if the second Member State so requires, a hosting agreement concluded with the research organisation in the second Member State;

(b) where not specified in the hosting agreement, the planned duration and dates of the mobility;

(c) evidence that the researcher has sickness insurance for all the risks normally covered for nationals of the Member State concerned as provided for in point (c) of Article 7(1);

(d) evidence that during the stay the researcher will have sufficient resources to cover subsistence costs without having recourse to the Member State's social assistance system, as provided for in point (e) of Article 7(1), as well as the travel costs to the first Member State in the cases referred to in point (b) of Article 32(4);

The second Member State may require the notifier to provide, before the start of mobility, the address of the researcher concerned in the territory of the second Member State.

The second Member State may require the notifier to present the documents in an official language of that Member State or in any official language of the Union determined by that Member State.

7. Based on the notification referred to in paragraph 2 the second Member State may object to the mobility of the researcher to its territory within 30 days from having received the complete notification, where:

(a) the conditions set out in paragraph 5 or, where applicable, paragraph 6 are not complied with;

(b) one of the grounds for rejection set out in points (b) or (c) of Article 20(1) or in paragraph 2 of that Article applies;

(c) the maximum duration of stay as referred to in paragraph 1 has been reached.

8. Researchers who are considered to pose a threat to public policy, public security or public health shall not be allowed to enter or to stay on the territory of the second Member State.

9. The competent authorities of the second Member State shall, without delay, inform the competent authorities of the first Member State and the notifier in writing about their objection to the mobility. Where the second Member State objects to the mobility in accordance with paragraph 7 and the mobility has not yet taken place, the researcher shall not be allowed to carry out part of the research in the research organisation in the second Member State. Where the mobility has already taken place, Article 32(4) shall apply.

10. After the period of objection has expired, the second Member State may issue a document to the researcher attesting that he or she is entitled to stay on its territory and enjoy the rights provided for in this Directive.